| 摘要 |
PURPOSE:To shorten a stator core in an axial direction and to improve the response by forming the core of two stator cores spaced axially at both sides of a permanent magnet. CONSTITUTION:A permanent magent 7 is removed from a rotor 6, provided at a stator side, and rotor balls 6-1, 6-2 are integrated to reduce the inertial efficiency of the rotor 6. A stator 1 is formed of two stator cores 8-1, 8-2 spaced axially and disposed at both sides of the magnet 7. Stator cores 8-1, 8-2 are composed of an annular yoke 1-1, and a plurality of poles 1-2-1-9 radially implanted from the outer periphery of the yoke 1-1 in the radial direction, and the poles are alternately bent oppositely at the prescribed angle axially at the position adjacent to the yoke 1-1. |
